Rusty writes: > On 10/5/07, Jan Hoevers <[EMAIL PROTECTED]> wrote: > > John Pettitt wrote on 3-10-2007 19:53: > > <snip> > > > Are there timing receivers that use the other sat-nav systems - Russian > > > (does it still work?) and European (is it working yet?)
> Although the idea of having other time sources than GPS is appealing > for several reasons, I suspect that most of us will have much more > pressing concerns than the operation of our NTP servers in the event > that GPS ever becomes unavailable permanently or for a long period of > time. Most commercial ships and airplanes are not allowed to have only GPS navigation equipment, they are also required to have other equipment that will allow them to safely sail/fly to a port/airport. Telcos and other places that have tight timing requirements typically have their own clock distribution infrastructure that is based around high-holdover capability clocks, but in recent years they have been increasingly tying much of their equipment to GPS too. Tim. _______________________________________________ timekeepers mailing list [email protected] https://fortytwo.ch/mailman/cgi-bin/listinfo/timekeepers
